게시판 리스트에서 분류없이 필터링하는 방법 문의

<?php
        for ($i=0; $i<count($list); $i++) {
            if($list[$i]['wr_25']==$yy&$list[$i]['wr_26']==$hakgi&$list[$i]['wr_22']==$cha){ //현재차수만 나오게 하기
         ?>
        <tr class="<?php if ($list[$i]['is_notice']) echo "bo_notice"; ?>">
            
            <?php if ($is_checkbox) { ?>
            <td class="td_chk">
                <label for="chk_wr_id_<?php echo $i ?>" class="sound_only"><?php echo $list[$i]['subject'] ?></label>
                <input type="checkbox" name="chk_wr_id[]" value="<?php echo $list[$i]['wr_id'] ?>" id="chk_wr_id_<?php echo $i ?>">
            </td>
            <?php } ?>
            <td class="td_num"><?php echo $list[$i]['wr_25'] ?></td>
            <td class="td_num"><?php echo $list[$i]['wr_26'] ?></td>
            <td class="td_num"><?php echo $list[$i]['wr_22'] ?></td>
            <td class="td_subject">

            ..............................

            ..........